Low GI foods - with a value of 55 or less - such as brown pasta, porridge and lentils - break down slowly during digestion while high GI foods of 70 or over, including white bread, pizza and white rice, cause a surge in blood sugar.
而那些具有低升糖指數(shù)的食物,諸如布朗面食、粥以及小扁豆等,其葡萄糖溶于血中的速度值大約是55或甚至更低,這些食物在被人消化時(shí)候的速度是很慢的,而那些具有高升糖指數(shù)的,比如白面包、匹薩和米飯這類食物,它們被消化的速度反而很快,速度值約為70甚至更高,因此它們會(huì)造成血糖的大幅度升高。